Everything posted by zKars
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Stupid question on fuel pressure regulator
yes it matters. And don't use two regulators. Use the stock regulator only in its after-the-rail stock position. At least that's my advice if you are keeping the fuel pressue at stock levels. The FSM for the 75-78 will show you a picture that shows which tubes are in and which are out.
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What's old is new again. Alternator upgrade options
The right way is to measure the current draw of all of the components then add 15-25% for safety margin. Trick is doing the measuring. The single biggest item other a big bad stereo is likely to be the a pair of 12" rad fans... Often 30 amps right there. Halogen bulbs, heater fan, wipers, heater fan, all the bulbs in the car, ignition, another 30-40 at best. 100 amp is enough for just about anybody with common upgrades.Rad fans, Halogen headlights, "nice" stereo.
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What's old is new again. Alternator upgrade options
1982 Caprice 5.0litre engine. Check Rockauto, you'll see a huge selection of 10SI alternators available. Clocking is 6:00, which means the top mount is 180 degrees from the lower mount. Most are 63 amp. There is one listing in there for this thing, Might work for us. PURE ENERGY 7127SW3 Click for more information about this part Remanufactured GM Universal, Single Wire, 63 amp alt. Here's the thing. None of them are 100+ amp one wire alternators. But it's the right case, and all it takes is a 12v wire to the exciter terminal to get them to work. It's a way to get back on the road in 60 minutes rather than 3 days. That's all I'm trying to do, give us options when traveling. I wish I could find autoparts that last 150,000 km, but that does seem to be realistic in this part of the world. I'm also not interested in originality, I'm interested in maximizing my enjoyment of my Z and doing everything I can to ensure I take whereever and whenever I feel like without fear of left on the side of the road when I can't get a super quality Nissan part. BTW, re not being able to find Podunk on the map, Poduck un-incorporated and closed as a townsite in 2011. Seems the AutoZone closed and it was the major employer in town, and it couldn't maintain liquidity. Sad, this is happening all over the US and Canada as small towns struggle to keep their young population from moving to more lucrative bigger centers
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What's old is new again. Alternator upgrade options
The turnbuckle is just a convenience, the stock bracket will work just fine too, as noted by Granny. At worst might need a little bending. I did drain the rad (was changing the antifreeze and ensuring -45C anyway) and removed the lower rad hose to make it easier to get in there. It's just a fancy hose, no water pump.
- What's old is new again. Alternator upgrade options
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What's old is new again. Alternator upgrade options
Quick note on the pulley alignment method. Assuming you have a properly prepared bracket (see above), you just need a 18" or so long straight edge. You can mount the alternator, then put the straight edge across the face of the alt. pulley, just above the center nut. You want the maximum amount of contact with the pulley edge/face. Angle it toward the water pump pulley. Try to touch the straight edge to the pulley face so it touches enough of the circumference to let you feel a positive stable contact. Yes the water pump pulley has a large center pertrubance, but its large enough diameter that you can easily get good contact with it above the center bump. Either the water pump pulley if ahead or behind the plane of the alt. pulley. Put the straight edge on the pulley that is the most forward, leaving a gap between the edge and the pulley that is most rear ward. Sight the gap across the pulley and straight edge and ensure the gap is consistent. If its not parallel, then the alternator is mounted skewed. Go to step 1. If the mounting bracket was cut to 1.75, then the alternator should be behind the water pump pulley. If it is parallel, then you see the gap you have to fill with washers, between the mounting bracket and the alternator bracket to space it forward, which is the normal case. If the alternator is in front of the water pump, then you will have trim some off of the front face of the mounting bracket. This must be done carefully to ensure it stays flat and square.
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What's old is new again. Alternator upgrade options
Thanks for all the feedback. I agree that getting the mounting bracket right is the key to the whole situation. Clearly I find the one wire (really two if you count the ground lug) very handy as it totally simplifies the wiring. True you loose the ability to have the charge light, but with an ammeter or voltmeter, which we all have, there should be no mystery if the thing is charging or not. I meant it when I said I'd make up mounting brackets for who ever needs one. Got the alignment jig built to mill them flat and straight and to drill the 3/8 hole straight through. I have nothing but good things to say about the good citizens of Kansas. The place looks exactly like home (Saskatchewan). No mountains or trees to block the view.
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What's old is new again. Alternator upgrade options
So you're on the road at night cruisin' in your Z. Slowly you notice that your headlights are getting dimmer and dimmer. You check your ammeter or voltmeter and see that your system is in discharge mode. Oh crap. Belt fall off? I hope so. Nope, still there and tight. oh oh oreo... Well you got that "big" 60 AMP internally reg'ed ZX alternator just a few month's ago, but I guess it gave up the ghost. Trouble is you're in Podunk Kansas and the local AutoZone doesn't have one in stock and can't get one for four days. Now what? Me, I'd rather have a common alternator, one I can get anywhere. And I mean anywhere. About the only sane choice is the GM 10SI body alternator. I know I know, you're thinking, "this GM alternator thing has been discussed to death", well, yes, but if you go looking you will find a variety of GM alternators discussed and the mounting of them is a bit of a mess. Advantage 1: Available anywhere, Advantage 2: Cheap Advantage 3: Internally regulated, one wire. Advantage 4: Available from 100-140 amp. Electric fans, big lights, big stereo, no problem. Advantage 5: Available anywhere. Yeah, again. Mounting is pretty easy after you get past the first issue, ie that the lower alternator mount has to be modified. It has to be cut and drilled. Here is where to get one. I picked mine up from Mopac in Calgary for $134 CAD all taxes in It fits the stock space well, even uses a 8x1.25 bolt at the upper mount point. You need to cut the mount off to leave 1.75-1.8 inches remaining. The cut face must be flat and flush and square the mounting surface. The alternator position is determined by this face, it has to be decent. The drill out the 8x1.25 threaded hole to 3/8" through the whole thing. You'll need a 4.5 x 3/8 grade 8 bolt, washers to space it just perfect to match the plane of the water pump pulley, and a nut/lock. I used a 4L350 drive belt. 35 inches long. PS, I have one of these in my Z and 510. Don't leave home without. Here is where to get one if you're the on-line type: https://www.performance-world.com/ProductDetails.asp?ProductCode=360520 I got mine at Mopac in Calgary for $135 CAD all taxes in. Show Chrome polish was $10 more. Yes really. Cutting, facing and drilling those brackets properly is a bit tricky without a mill. I have a couple of spares if you want one. I can wip them up in 15 min. Or send me yours. All I'm missing here i year/make\model spec to tell the young'en behind the counter when you need to find one in Podunk Kansas. (I've been there, its not so bad...)
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Clifford Performance 280z downdraft intake manifold
That Clifford stuff is not for us, it only fits Datsons......
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Tranmission gear noise magically solved
Alrighty then, its settled. Who would like a big icy cold shiny piece of stainless steel welded to the top of their gear shift lever? Only trick is mounting it to the tranny and getting it through the three shift boots.... It can be done. I have all sorts of internal transmission shafts that can easily be turned in serious shift T knobs..... This one is 5/8 diameter and 4.5 long.
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Tranmission gear noise magically solved
That does help explain why 3/5 is noisier than 4. My new T shifter is easily twice as heavy as the original shifter now that it has a fat solid SS bar welded on top of what's left of the old shifter shaft, so your increased mass = reduced noise observation makes sense and partly explains why Rob's noise is still there. I really like the ability to solidly push and pull that T-shifter. And all that cold steel under my hand feels really good. Bit chilly now that mornings are at the freezing point around here. Make me some delrin bushings' wood'ja?
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Tranmission gear noise magically solved
Velly Intellesting.... Same 3/5 noise, but not solved with bushing replacement. Hmmmm. Apparently you need a T shifter too! How about the bushings in the rear trans mount? Did you install the poly ones from the Energy suspension kit? Back to stock rubber!
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Tranmission gear noise magically solved
Over the past two-three years my 82-83 ZX trans in my 73, rebuilt about 10 years ago with new bearings and syncros, has been making more and more gear whine noise. Not all the time, but specifically in 3rd and 5th. Most noticable on the highway. In forth it's mostly not there, but move to 3rd or 5th and it got noticably louder. During the last trip to the coast, a rising, whining noise when downshifting started to get worse too. Specifically as you pushed the gearshift into the next lower gear prior to letting the clutch out. Going into 3rd was the worst, but other gears were starting this racket too.. oh well, I'm thinking, time for some work again. Couple weekend's ago, I had the console out (unrelated project), and somehow I decided it was time to try yet another "improvement" of changing my gearshift knob style. I've always wanted to try a "T" type handle, so out came the shift lever from the tranny. Well guess what I found. A damaged plastic pin bushing, on the right side.kinda crushed. Still there, but not in good shape. I did notice my shifter was SLIGHTLY sloppier than before, but not enough to make me go looking. Well, I proceed with my T shifter mod, (fodder for yet another post), replace that bad pin bushing and put it all back together. Natch, I had to take it for a drive to try out the shifter feel. Off I go merrily banging gears with a big grin on my face. It wasn't until I was bombing down the local freeway did a lightbulb finally go off and I says to myself, "Hey! where the hell did that gear whine go? The trans is totally silent!!!! So what changed? Well two things. The bushing of course, but also the length, shape and mass of the shifter rod. Apparently the noises that the trans makes ALL THE TIME was getting transmitted to the shifter rod with that bad bushing. Now with a good set of plastic bushings and a different rod shape and reasonant frequency, the thing is now quiet. Who'da thunk it? Anybody change their pin bushings to some solid metal ones notice any increase in tranny noise after doing that?
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Pertronix 91761 Ignitor II for 1972 240z?
No stock ballast required. The 0.6 ohm coil and Pertronix Ignitor II are a matched set.
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240Z Center AC Vent Options?
Those eyeballs are 280z dash end vents. They are great for a couple of reasons. 1. Fit the gauge holes. They are smaller than the 240 eyeballs. 2. They are aimable and CLOSEABLE unlike the 240 eyeballs. They are just siliconed against the back of the opening. If you had the dash out you could use the three little mounting tabs to put in some screws to secure it from the back. You have to remove all of the extra plastic from the eyeball housings but that's easy with the almighty dremel. They look good in chrome, but if you can't find a decent set (peeling chrome), just paint them black. As to where to find some, ebay, put a WTB ad up here, or maybe one of my storage bins?
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240Z Center AC Vent Options?
This is a little extreme, but its the only way to get a significant amount of cold A/C air flow directed at your face. I recently completed this mod and am extremely happy with the air flow performance. http://www.classiczcars.com/topic/52309-location-and-installation-of-vintage-air-gen-ii-mini-controls-on-1972-240z/ Go to post #12
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Heater control panel
The four cables all have to be attached to the front control level panel before putting that panel into/onto the dash. The cables are routed into place as you put the panel in, then later, attached to the four points (hot water valve, vent flap and two on the right side) under the dash. Each connection point requires a slightly different acrobat stance to get its retention clip in place, but perservere, you can do it. I cannot imagine trying to do it the other way.
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Beautiful picture after a great summer of driving!
Nothing worse than getting up the morning that you will put that cover on the Z for another 6 month rest. Nothing better than dreaming up the list of things to add to and improve on the Z over the next 6 months. And waiting for the post man to bring those boxes of goodies... Oh, yeah, please (insert preferred deity identifier here), let the USD/CAD exchange rate improve over the next 6 months....
- Daytona SCCA Runoffs
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Horn stopped working because.....
ChickenDude, it does not surprise me in the least that you made that apparently obsure connection. AND I'm coming to your place to play, I mean, RACE, slot cars next time I get over to the coast.
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[2015] What Did You Do To/with Your Z Today?
I completed the next stage in my return to a more rational ride quality. Changed out the 6K and 5K coil over springs on my McKinney Motor sport coil-overs (that 470 and 390 in-lb in case you were wondering... 70-100 is stock! sheesh!) springs for a nice set of 150/175 in-lb Eibachs... Much better! Not spongy or floaty or caddie like, actually quite nice.
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Smoother Idle at Low RPMS on a 240z
Getting the mixture correct has a huge impact on running smoothness and noise. Spend time on the getting the basics right and not adding new parts. It is quite suspicious that only 4 and 5 are black, 6 should be the same as they are all fed by the carb mixture.
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NGK BPR6ES plug cap coming loose warning
John, you mean the porsche threaded plug connectors (and the Rajay ones in your link) actually "thread" onto the threaded end of the plug (with the cap removed)? If this is the case, that would solve this loose cap issue. Nothing like a threaded connection to prevent loosening. Learn something every day! Thanks. I find it so hard to believe that something like this that is decades old has this type of design flaw that has never been addressed. Or are we making a mountain out of a mole hill (that's never happened before, has it?)
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Very Cool Ignition Upgrade
Measured the resistance end to end of the MSD button. ~2 ohms. Not that different from the carbon tip in the new Bosch cap, which is ~5 ohm. I think the difference is heat tolerance more than conductivity.
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Very Cool Ignition Upgrade
Well I got the MSD 8214 center contact. $15 canuck bucks. Nice piece, but about 2x larger diameter than the mini center in the Bosch cap. Its not clear, but it appears to be not solid, so its not going to be practical to machine it down to size. Pretty tiny, my lathe is not.... So now its a balance of how much $$ and time to design/make verses buying a few stock caps. The one we found in Port Alberni came with a $50 price tag. Ouch. Rockauto are $25ish, but with shipping for me...